Hermetica Superfood Encyclopedia
The Short Answer
Vishnukrantha (Evolvulus alsinoides) contains scopoletin and other coumarins that modulate GABA neurotransmission to support cognitive function and reduce anxiety. This Ayurvedic herb acts as a nervine tonic through cholinesterase inhibition and neuroprotective mechanisms.
CategoryHerbs (Global Traditional)
GroupAyurveda
Evidence LevelModerate
Primary KeywordVishnukrantha benefits
Synergy Pairings3
Vishnukrantha (Evolvulus alsinoides) — botanical close-up
Health Benefits
Origin & History
Natural habitat
Vishnukrantha (Evolvulus alsinoides) is a perennial prostrate herb from the Convolvulaceae family, native to regions including Sri Lanka and traditionally used in Ayurvedic medicine. The whole plant is harvested and processed into methanolic or ethanolic extracts containing alkaloids, flavonoids, terpenoids, and phenolic compounds.
“In Ayurveda, Vishnukrantha is classified as a key Medhya Rasayana herb, traditionally used for enhancing memory, intellect, and treating nervous system disorders. Known by Sanskrit names like Vishnukranthi or Rakthapushpika, it has been used historically for treating aggravated Kapha and Vata doshas, with applications including anticonvulsant, anthelmintic, and anti-anxiety treatments.”Traditional Medicine
Scientific Research
No human clinical trials, RCTs, or meta-analyses have been conducted on Vishnukrantha. Current evidence is limited to animal studies showing anxiolytic effects at 100-200 mg/kg in rodents and neuroprotective effects against aluminum-induced toxicity in rats, along with in vitro studies demonstrating antioxidant and anti-inflammatory properties.
Preparation & Dosage
Traditional preparation
Traditional Ayurvedic dosage for whole plant powder is 3-6 grams daily. Preclinical rodent studies used aqueous methanol extracts at 100-200 mg/kg for anxiolytic effects. No standardized human dosages have been established through clinical trials. Consult a healthcare provider before starting any new supplement.
Nutritional Profile
Vishnukrantha (Evolvulus alsinoides) is a non-food medicinal herb; its nutritional significance lies primarily in its bioactive phytochemical composition rather than conventional macronutrient content. Macronutrients: negligible caloric contribution in therapeutic doses; trace proteins, carbohydrates (primarily as cell wall polysaccharides and mucilaginous compounds), and minimal lipids. Key Bioactive Compounds: alkaloids including shankhpushpine and evolvine (approximately 0.1–0.3% dry weight), which are primary neuroactive constituents; betaine (trimethylglycine, ~0.5–1.2 mg/g dry weight), contributing to methylation pathways relevant to neurotransmitter synthesis; scopoletin (coumarin derivative, ~0.05–0.15 mg/g), with reported anxiolytic and neuroprotective properties; phytol and triacontane (waxy terpenoids); flavonoids including kaempferol and quercetin glycosides (combined ~2–5 mg/g dry weight), providing antioxidant activity. Micronutrients: modest iron content (~15–25 mg/100g dry herb), zinc (~2–4 mg/100g), and calcium (~300–500 mg/100g); trace selenium. Bioavailability Notes: aqueous and hydroalcoholic extracts demonstrate superior bioavailability of polar alkaloids and flavonoids compared to raw powder; lipophilic terpenoids require lipid-based or alcohol extraction for meaningful absorption; first-pass hepatic metabolism may reduce systemic alkaloid concentrations; traditional preparation as decoction (kwatha) or ghee-based formulation (as in Medhya Rasayana use) likely enhances CNS bioavailability of fat-soluble constituents. Data are derived from phytochemical studies; clinical pharmacokinetic data in humans remain limited.
How It Works
Mechanism of Action
Vishnukrantha's scopoletin and coumarin compounds inhibit acetylcholinesterase enzymes, enhancing cholinergic neurotransmission for improved memory formation. The herb modulates GABA-A receptors to produce anxiolytic effects while protecting neurons from oxidative stress through antioxidant phenolic compounds.
Clinical Evidence
Limited human clinical trials exist for Vishnukrantha, with most research conducted in animal models. Preclinical studies in rats demonstrated significant memory enhancement and anxiety reduction with aqueous-methanol extracts at 200-400 mg/kg doses. Traditional use spans centuries in Ayurvedic medicine as Medhya Rasayana for cognitive support. More randomized controlled trials in humans are needed to establish clinical efficacy and optimal dosing.
Safety & Interactions
Vishnukrantha appears generally well-tolerated in traditional use, but comprehensive safety data is limited. Potential interactions may occur with GABA-ergic medications like benzodiazepines due to the herb's GABAergic activity. Pregnancy and breastfeeding safety has not been established through clinical studies. Individuals with seizure disorders should consult healthcare providers before use due to potential effects on neurotransmitter systems.
Synergy Stack
Hermetica Formulation Heuristic
Also Known As
Evolvulus alsinoidesDwarf Morning GlorySlender Dwarf Morning GloryVishnukranthiRakthapushpikaShankhpushpiBlue DazeConvolvulus alsinoides
Frequently Asked Questions
What is the traditional Ayurvedic dosage for Vishnukrantha?
Traditional Ayurvedic texts recommend 1-3 grams of Vishnukrantha powder daily, typically taken with milk or honey. The herb is often combined with other Medhya Rasayana herbs like Brahmi and Mandukaparni for enhanced cognitive benefits.
How long does Vishnukrantha take to show memory benefits?
Animal studies suggest cognitive improvements may begin within 7-14 days of consistent use. Traditional Ayurvedic practice recommends continuous use for 2-3 months to achieve optimal Medhya Rasayana effects for memory and intellect enhancement.
Can Vishnukrantha be taken with other nootropic supplements?
Vishnukrantha may synergize with other cholinesterase-inhibiting herbs like Bacopa monnieri, but caution is advised with synthetic nootropics. The herb's GABAergic activity could potentiate effects of other calming supplements, requiring careful monitoring and professional guidance.
What part of the Evolvulus alsinoides plant is used medicinally?
The entire aerial parts of Evolvulus alsinoides including leaves, stems, and flowers are used in traditional preparations. Fresh juice extraction or dried powder from the whole plant provides the full spectrum of active coumarins and phenolic compounds.
Does Vishnukrantha have any contraindications with prescription medications?
Vishnukrantha may interact with anti-anxiety medications, anticonvulsants, and cholinesterase inhibitors due to its GABAergic and acetylcholinesterase-inhibiting properties. Patients taking psychiatric medications or cognitive enhancers should consult healthcare providers before combining with this herb.
What is the difference between Vishnukrantha and Convolvulus pluricaulis for anxiety?
Both Vishnukrantha (Evolvulus alsinoides) and Convolvulus pluricaulis are traditional Ayurvedic nervine tonics used for cognitive and anxiolytic support. Preliminary research shows that aqueous methanol extracts of Vishnukrantha demonstrate anti-anxiety activity in rodent models at 100-200 mg/kg, with effects comparable to Convolvulus pluricaulis. However, direct human clinical comparisons between these two herbs are limited, and traditional Ayurvedic texts may recommend them for slightly different constitutional types (Vata, Pitta, Kapha imbalances).
Is Vishnukrantha safe for children?
Vishnukrantha has a long history of traditional use in Ayurvedic pediatric formulations for supporting memory and cognitive development in children. However, formal safety studies in pediatric populations are limited, and dosing should be significantly lower than adult recommendations and guided by a qualified Ayurvedic practitioner. Parents should consult with a healthcare provider before giving Vishnukrantha to children, particularly those under 5 years old.
What forms of Vishnukrantha are most effective—powder, extract, or whole plant?
Vishnukrantha is traditionally used as a dried whole plant powder or as part of classical Ayurvedic formulations, which remain the most commonly studied forms in traditional practice. Concentrated aqueous methanol extracts have shown measurable anti-anxiety activity in preliminary research, suggesting extraction may increase bioavailability of active compounds. The optimal form depends on intended use; whole plant powders offer traditional synergy while extracts may provide more concentrated effects, though human efficacy data comparing forms is scarce.
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